Water is channelled through a series of irrigation canals.
Temperatures here can reach up to 45C in summer but irrigation canals and oxen-powered pumps keep Nile water streaming in all year round.
Some successful examples were given to illustrate the effects of different pumping sites along the irrigation canals on sediment utilization, treatment and transportation.
MacKinnon says the alien species can reduce crop yields, choke irrigation canals, block hydroelectric DAMS and cut the lifespan of development investments.
The young ruler also presided over creation of an advanced agricultural infrastructure that incorporated irrigation canals and storage granaries.
Lining and covering irrigation canals to avoid ground seepage and evaporation could save huge... [More].
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